Pink used to be a boys color APR 12 2011

But nowadays people just have to know the sex of a baby or young child at first glance, says Jo B. Paoletti, a historian at the University of Maryland and author of Pink and Blue: Telling the Girls From the Boys in America, to be published later this year. Thus we see, for example, a pink headband encircling the bald head of an infant girl.

Why have young children's clothing styles changed so dramatically? How did we end up with two "teams" -- boys in blue and girls in pink?

"It's really a story, what happened to neutral clothing," says Paoletti, who has explored the meaning of children's clothing for 30 years. For centuries, she says, children wore dainty white dresses up to age 6. "What was once a matter of practicality -- you dress your baby in white dresses and diapers; white cotton can be bleached-became a matter of 'Oh my God, if I dress my babies in the wrong thing, they'll grow up perverted,'" Paoletti says.

It is nearly impossible, even in NYC, to find girls clothes that are not pink unless you pay through the nose for imported European kids clothes. See also vocabulary in boys and girls toy advertising. (via megnut, who is fighting to keep our kids in gender neutral clothing)